On Fri, Jan 18, 2008 at 08:59:20AM -0500, Michael Scheidell wrote:
> host -t txt ibm.com
> ibm.com descriptive text "v=spf1 -all"
>
> What does that mean? with -all, does that mean that since there are NO
> records at all that all email should hardfail?
That's the preferred way of stating in SPF that no mail is ever
emitted from this domain and therefore all mail from "@ibm.com" may
safely be discarded. As noted, it may make good sense when all
legitimate mail comes from subdomains; also when there's a domain that
is only used for web purposes, for instance.
It's actually one of the more useful statements in SPF.
-- Clifton
--
Clifton Royston -- [EMAIL PROTECTED] / [EMAIL PROTECTED]
President - I and I Computing * http://www.iandicomputing.com/
Custom programming, network design, systems and network consulting services
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